51216503 ÷ 313 
We want to divide 51216503 by 313.

Moving on to step 1:
The number 313 fits into 5 0 times, leaving a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Include the next digit (1) from the dividend after 5, then repeat: 51 / 313

Step 2:
The number 313 fits into 51 0 times, leaving a remainder of 51.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 51, we end up with 51.
Append the next digit (2) from the dividend to 51 and continue with: 512 / 313

Let's proceed to step 3:
If we divide 512 by 313, we get 1 and a remainder of 199.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 313 from 512 to get 199.
Include the next digit (1) from the dividend after 199, then repeat: 1991 / 313

Advancing to step 4:
1991 divided by 313 is 6 with a remainder of 113.
Record the quotient 6 as the next digit in the result. 
Result so far: 16.0
The remainder is 113 after subtracting 1878 from 1991.
Include the next digit (6) from the dividend after 113, then repeat: 1136 / 313

Step 5:
When dividing 1136 by 313, we get 3 with a remainder of 197.
The number 3 becomes the next digit in our result. 
Result so far: 163.0
If we subtract 939 from 1136, we get 197.
Take the next digit (5) from the dividend and append it to 197, then repeat: 1975 / 313

Step 6:
When dividing 1975 by 313, we get 6 with a remainder of 97.
Write down 6 as next digit of the result. 
Result so far: 1636.0
Subtract 1878 from 1975 to get 97.
Append the next digit (0) from the dividend to 97 and continue with: 970 / 313

Advancing to step 7:
313 goes into 970 3 times with a remainder of 31.
Use 3 as the next digit of our solution. 
Result so far: 16363.0
The remainder is 31 after subtracting 939 from 970.
Bring next digit (3) of the dividend behind the 31 and repeat the process: 313 / 313

Step 8:
The number 313 fits into 313 1 times, leaving a remainder of 0.
Put 1 as the next digit of the answer. 
Result so far: 163631.0
Deduct 313 from 313 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 9:
313 can be fit into 0 0 times, resulting in a remainder of 0.
The next digit of our result is 0. 
Result so far: 163631.0
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 10:
313 goes into 0 0 times with a remainder of 0.
The next digit of our result is 0. 
Result so far: 163631.0
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

After the division, we end up with 163631.0 and a remainder of 0.0.